泉州不同凡响电子科技有限公司

Quanzhou JinSheng Electron CO., Ltd

TEL:+86-0595-22356961-2 FAX:22356508

Http://www.laba.co   ADD:中国福建省泉州市浔美工业区海西电子信息产业育成基地

 型号                                       Model

QP28CP04-R+W

尺寸           Dimension

Outer Diameter28mm Baffle Opening11.7mm Height Refer to drawing in details;

 阻抗                                            Nominal Impedance

  4 Ohm±15%    At1000 HZ

 额定功率                                      Power Rating

  3.0 watt     Maximum  3.5  Watt  

 最低共振频率         Lowest Resonant requency 

 772±20% HZ.

灵敏度                                     Output Sound Pressure Level(S.P.L)

  77 ± 3db/1 Watt.1Meter.Average at800,1000,1200,1500HZ.

 频率范围                                Frequency Rang

 FO-20 KHZ ,Average SPL±10db

 失真率                                  Distortion

3%Maxium At1000HZ  3.0 W

极性            Polarity

Diaphragm shall move forewarg when Apply a Postive DC current the "+" or"Marked" Terminal

 寿命测试                             Load Test

Bt Audio Singnal Generator At 3.46 Volts.total 48 hours and20~20KHZ Resonant Frequency

 异音测试           Abnormal Sound Test

Must be Normally tasted Bt 3.46 Volts Sinwave

工作温度        Operation Temperature

 20℃ ~   50℃

储藏温度         Storage Temperature

 40℃ ~   60℃